Exodus 31:14-16

Complete Jewish Bible

¹⁴ Therefore you are to keep my Shabbat, because it is set apart for you. Everyone who treats it as ordinary must be put to death; for whoever does any work on it is to be cut off from his people. ¹⁵ On six days work will get done; but the seventh day is Shabbat, for complete rest, set apart for Adonai. Whoever does any work on the day of Shabbat must be put to death. ¹⁶ The people of Isra’el are to keep the Shabbat, to observe Shabbat through all their generations as a perpetual covenant.